"""
interesting but not actually useful in this case

class Phony(object):
    def __init__(self):
        self.meth = None
    
    def phony(self):
        yield([0,1,4,9,16])
        yield([])
    
    def __call__(self,thing):
        self.meth = self.meth or self.phony()
        return self.meth.next()
        
spinyinvoke = Phony()
"""
